\name{registerFileType}
\alias{registerFileType}
\title{Register a new file type in xHtr...}
\usage{registerFileType(tag, readFunction)}
\description{Register a new file type in xHtr}
\details{This function registers new file types for XHtr, and will typically be used from libraries providing new actions.}
\value{invisible Null, this function is called for its side effect}
\arguments{\item{tag}{A character string containing the tag used to identify files of a certain type in dataLocation files.}
\item{readFunction}{a function for reading files of the given type.}}
